Kitchen knife sharpener



Jam 1949- -J. B. JACOBSON KITCHEN KNIFE SHARPENER Filed March 20, 1947 Inventor JESSE BRYAN IJAEDBSUN 3, Attorneys Patented Jan. 11, 1949 UNITED STATES PATENT OFFICE Jesse Bryan Jacobson, San Jose, Calif. Application-March 20, 1947', Serial No. 735,928

This invention appertains tonovel and useful improvements in sharpening instruments useful in adjusting the cutting. edge of. substantially all types of knives andthe like.

An object 01E this invention is to provide an.

improved housing means," provided with limiting means for preventing undesirable angularity of knives relative to the sharpening during knife edge adjusting operations.

Another object of this invention is to provide an improved, cylindrical sharpening means extending partially within said limiting means.

A further object of this invention is to provide guide means for directing a tool through said housing and against said sharpening means to facilitate removal of the same.

Another object of this invention is to provide a mechanically simple device which is both emcient in operation and inexpensive to manufacture.

Ancillary objects and features of novelty will become apparent in following the description of the preferred embodiment of the present invention, illustrated in the accompanying drawings, wherein:

Figure 1 is a perspective view of the preferred form of the present invention;

Figure 2 is a longitudinal sectional view of the invention disclosed in Figure 1 and taken substantially on the line 2-2 thereof and in the direction of the arrows, and;

Figure 3 is a transverse sectional view of the invention taken substantially on the line 3-3 thereof and in the direction of the arrows.

This invention has been developed to provide an improved device for sharpening various instruments such as knives, tools and other similar articles. In the usual, conventional knife sharpening devices, there is the ever present danger of inadvertently cutting or otherwise injuring the operator. Further, persons unskilled in sharpening knives and the like, quite frequently turn said knives to an undesirable degree of angularity relative to the abrading or sharpening means. In the present invention, means have been provided for minimizing the possibility of accidents and means have also been provided for preventing unskilled persons from inclining knife edges too steeply with respect to the sharpening or abrading element.

A housing In, composed of any suitable material such as wood, plastic or the like, is provided preferably of substantially rectangular configuration. It is noted, however, that the housing likewithin the said housing 4' Claims. (Cl. 51214) 2; member in may be decoratively or fancifully configured to assist in marketing the invention.

Means are provided forguiding knives and the IU.' This means is a simple slot" l2, extending longitudinally of the said housing l0. It is quite apparent from an inspection of Figures 1 .andi2; that. the said slot is adapted to receiveknives'therein and to prevent the same from inadvertently slipping above the abrading means and possibly injuring the user of the invention.

A sharpening means, preferably a cylindrical abrading stone I4, is provided in a suitable slot within the said housing l0. It is noted that a portion of the abrading means I4 extends within the slot l2. Obviously, this portion is utilized during the sharpening operation. The said abrading means is pressed within the housing l0. Consequently, a guide means, in the form of an aperture I6 is provided within the housing l0, terminating at one end of said abrading means. This slot I6 is used in directing a tool, such as an ice pick or the like, against one terminal portion of said abrading means. Force exerted at this end of the abrading means tends to urge the stone outwardly of said housing. It may readily be appreciated that when one surface of the abrading means becomes worn, it may simply be turned, thus providing a new surface. Further, when the abrading means 14 becomes broken, due to wear or otherwise, it may simply be removed, discarded and a new abrading means substituted therefor.

Due to the particular size of the slot 5 2, knives or tools placed therein will be restricted as to the angle of inclination relative to the stone or abrading means M. of course, if small paring knives, having a very thin blade are sharpened, they might be rotated to a perpendicular position relative to the abrading means. However, this knife is relatively inexpensive and the larger, more expensive knives will be protected from the above described injurious sharpening process.

Referring to Figures 1 and 2, it is seen that the housing I0 is reduced at one end to form a handle portion. This is suggestive of holding the invention in one hand while sharpening knives or other instrumentalities therein. However, if so desired, the invention may be fixedly secured to any suitable article of furniture or portion of the kitchen. When this latter expedient is used (in restaurants, hotel kitchens, hospital kitchens, and the like), the possibility of misplacing the invention is obviated.

Due to the extreme simplicity achieved by this invention, further description thereof is deemed unnecessary. However, it is apparent to those skilled in the art, that variations as to size and shape may be made herein without departing from the spirit of the invention.

Accordingly, limitation is sought only in accordance with the scope of the following claims.

Having thus described this invention, what is claimed as novel and improved is as follows:

1. A knife sharpener comprising a housing, means for guiding knives in said housing, abrading means removably received in said housing, said guide means comprising an upper, lower and end walls defining a slot longitudinally of said housing, said abrading means comprising a sharpening stone extending partially Within the slot and forming a portion of the said lower wall, and means for guiding a tool within said housing and against a terminal portion of said stone thereby facilitating removal of the stone.

2. A knife sharpener comprising a housing, means for guiding knives in said housing, said guide means including walls defining a slot longitudinally of said housing, said housing'having aligned bores therein communicating with the slot, abrading means comprising a sharpening stone detachably received in the slot and extending partially within said bores.

3. The combination of 'claim 2 and said stone protruding partially from the upper surface of said lower wall.

4. The combination of claim 3 and the upper surface of said lower wall being fiat with the stone being substantially cylindrical.

JESSE BRYAN JAcoBsoN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name 7 Date 300,656 St. Pierre June 17, 1884 385,706 Ginn July 10, 1888 492,810 King Mar. 7, 1893 555,974 Roberts et a1. Mar. 10, 1896 736,245 Goodfellow Aug. 11, 1903 899,140 Spafford Sept. 22, 1908 1,273,624 Krollins July 23, 1918 1,324,097 Allen Dec..9, 1919 1,500,241 Gum July 8, 1924 FOREIGN PATENTS Number Country Date 166,285 Germany Dec. 31, 1933 

